The Improvement of Production of the GDR5OLT in...
Transcript of The Improvement of Production of the GDR5OLT in...
The improvement of production of the GDR50LT in Lithuania
Kęstutis PAPŠYS, Lina PAPŠIENĖ, Julius D. BUDREVIČIUS, Marius MARMA,
Evaldas ROŽANSKAS, Mindaugas PAŽEMYS / GIS-Centras
Jurgita ŠPŪRAITĖ / National Land Service
The company - The National Center of Remote Sensing and Geoinformatics „GIS-
Centras“ (SE „GIS-Centras“)• Since 1992
• Supervised by the National Land Service
• Headquarters in Vilnius, branch in Kaunas
• Leader in distribution of geographic data and maps
• Official manager of State Information Systems:
o Portal of the National Spatial Data Infrastructure (www.geoportal.lt)
o (Geo)reference data cadaster (GRPK)
o (Geo)reference spatial data set at the scale 1:10.000 (GDR10LT)
o National GNSS permanent network (LitPOS)
from 2013-07-01
+ GRPK
Reference data
(Geo)reference spatial data represent:
• natural (the land cover, water bodies, etc.) and
• anthropogenic (buildings, roads, etc.) objects of the landscape.
Scales: 1:10 000, 1:50 000, 1:250 000
GDR10LT
GDR50LT
GDR250LT
Reference data
built-up territories
swamps
power lines
gas pipelines
oil pipelines
air navigation obstacles
geographic names
etc.
road and street centerlines
railroads centerlines
river and stream centerlines
canal and ditch centerlines
rivers, pounds, lakes,
see shorelines
buildings
geodetic points
elevation points
boundaries of land coverage
GD
R1
0L
TG
RP
K
Sources for updating
GDR10LT
GDR50LT
GDR250LT
GRPK
National Roads IS
Cadaster of rivers,
lakes and pounds
Surveyors
Municipalities
Register of Address
Other official data
providers
Manager: GIS-Centras
Owner: National Land Service
Land ISThe maps of reference
objects
Geodetic Points IS
D a
t a
p r
o v
i d
e r
s ,
r e
g i
s t
r e
s ,
e t
c .
Traditional updates of GDR10LT and GDR50LT
National Roads IS
Cadaster of rivers,
lakes and pounds
Surveyors
Municipalities
Register of Address
Other official data
providers
Land IS
Geodetic Points IS
GDR10LT
GRPK
GDR10LT
+ 1-2 years
continuously
GDR50LT
+2 years = 4-5 years!
GDR50LT
1-2 years
PRECONDITIONS
Have to be use:
Current specifications of GDR10LT and GDR50LT
Current spatial data of GDR10LT
ArcGIS software
The beginning (2013)
5 moths
GIS-Centras
National Land Service
The research of the possibilities for automated or semi automated
update of GDR50LTProject:
Contractor:
Implementer:
Duration:
to analyse the possibilities of the automated or semi automated
update of GDR50LT by using the spatial data of GDR10LT in
territory of Lithuania
Main task:
Tasks of the Project
1. Analyse of current spatial data sets
3. Analyse of algorithms
Prepare the prototype
model of automated
process
2. Prepare updates of
specifications of GDR10LT
and GDR50LT
6. Prepare
recommendations for
the process4. Design of conception model
5. Design, develop and
test of update processes
GDR50LTGDR10LT
The results
8%
3%
8%
12%
19%
50%
0% 10% 20% 30% 40% 50% 60%
Possibility of automatic update without any improvements in source or target data (e.g. roads)
Possibility of automatic update with some improvements in source or target data (e.g. land cover)
Possibility of partly automatic update (e.g. contour lines, place-names)
Possibility of full automatic update using other data sources (e.g. territories of protected sites)
No update needed (map sheets)
Too complicated in current situation (e.g. elevation points)
Possibilities of automatic updates in territory of Lithuania
Follow up (2014)
5 moths
GIS-Centras
National Land Service
The automatisation of updating GDR50LTProject:
Contractor:
Implementer:
Duration:
To develop models for automatic updating GDR50LTMain task:
Verifications of source data
UPDATINGTEMPORARY
DATA
RESTRUCTURING
GDR50LT
GDR10LT
2013 GDR50LT
The cadaster of protected
sites
INACCURACIES
Generalization in the Project
Reduce the count of featuresReduce the complexity of features
Object
interpretation
Model generalization
Cartographic
generalization
GDR10LTcadaster of protected
sites
GDR50LT
Conception of models (implementation)
GDR50LT DB
MODEL FOR DATA
TRANSFERRING
OPERATIVEDB
VERIFICATION MODEL (1)
UPDATING MODEL
MODEL FOR RESTRUCTURING
TEMPORARY GDR50LT DB
VERIFICATION MODEL (2)
INACCURACIES DB (2)
Geodetic points IS The
cadaster of protected
sites 2013 GDR50LT
GDR10LT
INACCURACIES DB (1)
Designing > Development > Testing
Development
Testing
OK?
Designing
FINISH
The results GEODEZ
KELIAI
GELEZINK
HIDRO_L
ELEKTRA_L
PLOTAI
GDR10LT
GDR10LT
GDR10LT
GDR10LT
GDR10LT
GDR10LT
GDR50LT
GDR50LT
GDR50LT
GDR50LT
GDR50LT
GDR50LT
Links between data layers (conception of update)
KELIAI
PLOTAI
DUJOS_L
ELEKTR_L
HIDRO_L
GELEZINK
GEODEZ
KLIUTYS
KRANTAI_L
PASTAT
PAVELDAS_T
VIETOV_T
PLOTAI_SAUG
PLOTAI_ADMRIBOS_L
PAVELDAS_P
MISKAI_L
UZTVANK_T
NAFTA_L
GDR10LT.VIETOV_T
GDR10LT.PASTATGDR10LT.VIETOV_P GDR10LT.GEODEZ
GDR10LT.KELIAI
GDR10LT.GELEZINK
GDR10LT.HIDRO_L
GDR50LT.UZTVANK_T
GDR10LT.PAVELDAS_TGDR10LT.PAVELDAS_P
STK.DRAUSTINIAI,
PARKAI, REZERVATAI
GDR10LT.RIBOS
GDR10LT.NAFTA_L
GDR10LT.KLIUTYS
GDR10LT.ELEKTR_L
GDR10LT.DUJOS_L
GDR10LT.MISKAI_L
GDR10LT.PLOTAI_L
GDR10LT.PLOTAI
PAKILIMOTAKAI
RELJEF_TINRELJEF_GRIDGDR10LT.SRMRELJEF_HOR
Advantages of ArcGIS Model Builder
• Easy to use• No needs special knowledge in
programming• Possibilities to prepare user interface,
help• And much more...
Generalisation tools:
Aggregate points
Aggregate Polygons
Collapse Dual Lines
Collapse Road Detail
Merge Divided Roads
Thin Road Network
Delineate Built-up Areas
Simplify Buildings
Simplify Lines
Simplify Polygons
Smooth Lines
Eliminate Polygon part
Eliminate...
Other tools:
Select
Buffer
Clip
Erase
Spatial Join
Feature to ...
Extend
Topology
Generate Near Table
Spatial Joint
Select by Location
Calculate Field
Append...
Advantages of ArcGIS Model Builder
Surprises of ArcGIS Model Builder
Standard generalisation tools do not fulfil our expectation (sometimes):
• Aggregate sometimes don‘t get good results
• Thin hydro features – source data: perfect network; required Production Mapping
• Thin road network sometimes don‘t remove dangles
GIS-Centras prepared several his own algorithm using other ArcGIS geoprocessing tools.
* I could not repeat you problem
unrepeatable problems*
problems depending from the week day or
updates
Some statistics
• Five main models
• Each of them have to include models for
each Feature Class of GDR50LT
• Each of them might include n submodels
• And we use A LOT OF tools.
We would like...
• To work less
• More flexible Geoprocessing tools
• More friendly ModelBuilder user-interface
• Better compatibility with hardware and software
• Understanding difference between point and comma
Benefits
ORT5LT
GDR10LT
ORT5LT
GDR50LT
GDR10LT
GDR50LT
1 year 2 year 3 year 4 year
ORT5LT
GDR10LT
ORT5LT
GDR10LT
1 year 2 year 3 year -
GDR50LT
Time reduction • Costs reduction • Less recourses • Data integrity
Future
GDR10LT
GDR250LT
GDR50LT
Maps
Topographic maps